EXPERIMENTAL STUDY ON THE PLANE STRAIN DYNAMIC FRACTURE TOUGHNESS OF 20CRMNTI BASED ON IMPROVED HPB PLATFORM
To obtain the dynamic fracture toughness of 20 Cr Mn Ti,an impact loading test was conducted on three-point bending specimens with the improved Hopkinson pressure bar.Dynamic stress intensity factor was determined by the spring mass model.The onset time of crack initiation is experimentally detected...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | zho |
| Published: |
Editorial Office of Journal of Mechanical Strength
2018-01-01
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| Series: | Jixie qiangdu |
| Subjects: | |
| Online Access: | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2018.04.09 |
| _version_ | 1797767772431712256 |
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| author | SONG Kun ZHANG XiaoDi DING Jun HUANG Xia HE XiaoJin WANG JiaBin WANG LuSheng |
| author_facet | SONG Kun ZHANG XiaoDi DING Jun HUANG Xia HE XiaoJin WANG JiaBin WANG LuSheng |
| author_sort | SONG Kun |
| collection | DOAJ |
| description | To obtain the dynamic fracture toughness of 20 Cr Mn Ti,an impact loading test was conducted on three-point bending specimens with the improved Hopkinson pressure bar.Dynamic stress intensity factor was determined by the spring mass model.The onset time of crack initiation is experimentally detected using the strain gauge method.Dynamic fracture toughness of20 Cr Mn Ti with type I crack was obtained through the above experimental procedure.The geometrical dispersion distortion caused by lateral inertia effect is effectively inhibited by the wave shaping technique,to ensure the consistency of stress wave signal in measuring point and loading point is guaranteed.At the same time,the high-speed camera system was used to collect the image and the change of the surface strain field during the loading process was analyzed with GOM Correlate.The results show that samples before crack initiation has reached the dynamic strain balance,ensure the validity of the experiment. |
| first_indexed | 2024-03-12T20:43:42Z |
| format | Article |
| id | doaj.art-042b6551b1854699a2f560bade407ee8 |
| institution | Directory Open Access Journal |
| issn | 1001-9669 |
| language | zho |
| last_indexed | 2024-03-12T20:43:42Z |
| publishDate | 2018-01-01 |
| publisher | Editorial Office of Journal of Mechanical Strength |
| record_format | Article |
| series | Jixie qiangdu |
| spelling | doaj.art-042b6551b1854699a2f560bade407ee82023-08-01T07:47:17ZzhoEditorial Office of Journal of Mechanical StrengthJixie qiangdu1001-96692018-01-014081582130602218EXPERIMENTAL STUDY ON THE PLANE STRAIN DYNAMIC FRACTURE TOUGHNESS OF 20CRMNTI BASED ON IMPROVED HPB PLATFORMSONG KunZHANG XiaoDiDING JunHUANG XiaHE XiaoJinWANG JiaBinWANG LuShengTo obtain the dynamic fracture toughness of 20 Cr Mn Ti,an impact loading test was conducted on three-point bending specimens with the improved Hopkinson pressure bar.Dynamic stress intensity factor was determined by the spring mass model.The onset time of crack initiation is experimentally detected using the strain gauge method.Dynamic fracture toughness of20 Cr Mn Ti with type I crack was obtained through the above experimental procedure.The geometrical dispersion distortion caused by lateral inertia effect is effectively inhibited by the wave shaping technique,to ensure the consistency of stress wave signal in measuring point and loading point is guaranteed.At the same time,the high-speed camera system was used to collect the image and the change of the surface strain field during the loading process was analyzed with GOM Correlate.The results show that samples before crack initiation has reached the dynamic strain balance,ensure the validity of the experiment.http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2018.04.0920CrMnTi;Hopkinson pressure bar;Lumped mass-spring models;High-speed camera system;GOM Correlate;Dynamic fracture toughness |
| spellingShingle | SONG Kun ZHANG XiaoDi DING Jun HUANG Xia HE XiaoJin WANG JiaBin WANG LuSheng EXPERIMENTAL STUDY ON THE PLANE STRAIN DYNAMIC FRACTURE TOUGHNESS OF 20CRMNTI BASED ON IMPROVED HPB PLATFORM Jixie qiangdu 20CrMnTi;Hopkinson pressure bar;Lumped mass-spring models;High-speed camera system;GOM Correlate;Dynamic fracture toughness |
| title | EXPERIMENTAL STUDY ON THE PLANE STRAIN DYNAMIC FRACTURE TOUGHNESS OF 20CRMNTI BASED ON IMPROVED HPB PLATFORM |
| title_full | EXPERIMENTAL STUDY ON THE PLANE STRAIN DYNAMIC FRACTURE TOUGHNESS OF 20CRMNTI BASED ON IMPROVED HPB PLATFORM |
| title_fullStr | EXPERIMENTAL STUDY ON THE PLANE STRAIN DYNAMIC FRACTURE TOUGHNESS OF 20CRMNTI BASED ON IMPROVED HPB PLATFORM |
| title_full_unstemmed | EXPERIMENTAL STUDY ON THE PLANE STRAIN DYNAMIC FRACTURE TOUGHNESS OF 20CRMNTI BASED ON IMPROVED HPB PLATFORM |
| title_short | EXPERIMENTAL STUDY ON THE PLANE STRAIN DYNAMIC FRACTURE TOUGHNESS OF 20CRMNTI BASED ON IMPROVED HPB PLATFORM |
| title_sort | experimental study on the plane strain dynamic fracture toughness of 20crmnti based on improved hpb platform |
| topic | 20CrMnTi;Hopkinson pressure bar;Lumped mass-spring models;High-speed camera system;GOM Correlate;Dynamic fracture toughness |
| url | http://www.jxqd.net.cn/thesisDetails#10.16579/j.issn.1001.9669.2018.04.09 |
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